If there are micro-seized areas on the liner or skirt scratch-over manually with a coarse carbo-rundum stone (grindstone), moving the grindstone () at an angle of 20 to 30 degrees to horizontal.
A、clockwise
B、anticlockwise
C、crosswise
D、vertically
A、clockwise
B、anticlockwise
C、crosswise
D、vertically
A、make clear of your authority B、make friends with ships crew C、call the first engineer if there is a problem D、call the master if there is a problem
A、Constraints provide data independence. B、Constraints make complex queries easy. C、Constraints enforce rules at the view level. D、Constraints enforce rules at the table level. E、Constraints prevent the deletion of a table if there are dependencies. F、Constraints prevent the deletion of an index if there are dependencies.
A、Constraints provide data independence. B、Constraints make complex queries easy. C、Constraints enforce rules at the view level. D、Constraints enforce rules at the table level. E、Constraints prevent the deletion of a table if there are dependencies. F、Constraints prevent the deletion of an index if there are dependencies.
A、Constraints provide data independence. B、Constraints make complex queries easy. C、Constraints enforce rules at the view level. D、Constraints enforce rules at the table level. E、Constraints prevent the deletion of a table if there are dependencies. F、Constraints prevent the deletion of an index if there are dependencies.
A、There are 254 usable subnets. B、There are 256 usable hosts per subnet. C、There are 50 usable subnets. D、There are 254 usable hosts per subnet. E、There are 24 usable hosts per subnet. F、There is one usable network.
A、There are two broadcast domains in the network. B、There are four broadcast domains in the network. C、There are six broadcast domains in the network. D、There are four collision domains in the network. E、There are five collision domains in the network. F、There are seven collision domains in the network.
A、There are two broadcast domains in the network. B、There are four broadcast domains in the network. C、There are six broadcast domains in the network. D、There are four collision domains in the network. E、There are five collision domains in the network. F、There are seven collision domains in the network.
A、There are two broadcast domains in the network. B、There are four broadcast domains in the network. C、There are six broadcast domains in the network. D、There are four collision domains in the network. E、There are five collision domains in the network. F、There are seven collision domains in the network.